Maine Cosmetologist Practice Exam 2026 - Free Cosmetology Practice Questions and Study Guide

Question: 1 / 400

What does the pH scale measure?

The viscosity of a liquid

The density of a substance

The acidity or alkalinity of a substance

The pH scale is a numerical scale used to specify the acidity or alkalinity of a substance in a solution. It ranges from 0 to 14, where values below 7 indicate acidic properties, a value of 7 represents neutral (neither acidic nor alkaline), and values above 7 indicate alkaline properties. This measurement is crucial in various fields, including cosmetology, as it helps determine how different products interact with the skin and hair, which can significantly affect their health and appearance. Understanding the pH level of products ensures better choices for clients, as certain pH levels can be more beneficial or harmful for specific skin types or hair conditions.

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The temperature of a solution

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